This week I took one more stab at tracking down my 16th century friend. I looked through several online archives, searching the name that was given as the author of the book I had. Then I found a source listing the author as having a slightly different name, as in one letter difference. Apparently my friend is known as ConfortI as well as ConfortO. I should have tried that spelling before because I had heard it said that way but figured it was a mistake because I have seen the book.
So, I was then happy to find Mr. C does in fact have a page on Grove, which is a wonderful starting place. I also found a couple other citations that I will try to track down.
And yes, I do feel very silly.